title: Sub-10 nm Graphene Nanoribbon Array field-effect transistors fabricated by block copolymer lithography.
abstract: Sub-10 nm Graphene Nanoribbon Arrays are fabricated over large areas by etching CVD-grown graphene. A mask is used made by the directed self-assembly of a cylindrical PS-b-PDMS block copolymer under solvent annealing guided by a removable template. The optimized solvent annealing process, surface-modified removable polymeric templates, and high Flory-Huggins interaction parameters of the block copolymer enable a highly aligned array of nanoribbons with low line edge roughness to be formed. This leads to a higher on/off ratio and stronger temperature dependence of the current for nanoribbon FETs, and a photocurrent which is 30 times larger compared to unpatterned graphene.
authors.affiliation: Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139 (USA); Photo-Electronic Hybrids Research Center, Korea Institute of Science and Technology, Seoul, 136-791 (South Korea).
authors.forename: Jeong Gon
authors.initials: JG
authors.lastname: Son
authors.forename: Myungwoo
authors.initials: M
authors.lastname: Son
authors.forename: Kyeong-Joo
authors.initials: KJ
authors.lastname: Moon
authors.forename: Byoung Hun
authors.initials: BH
authors.lastname: Lee
authors.forename: Jae-Min
authors.initials: JM
authors.lastname: Myoung
authors.forename: Michael S
authors.initials: MS
authors.lastname: Strano
authors.forename: Moon-Ho
authors.initials: MH
authors.lastname: Ham
authors.forename: Caroline A
authors.initials: CA
authors.lastname: Ross
mesh_terms: D004129:Dimethylpolysiloxanes / Q000737:chemistry; D006108:Graphite / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D009757:Nylons / Q000737:chemistry; D010316:Particle Size; D014173:Transistors, Electronic
chemical_list: D004129:Dimethylpolysiloxanes; D037742:Nanotubes, Carbon; D009757:Nylons; C085707:poly(dimethylsiloxane)-polyamide copolymer; D006108:Graphite
keywords: block copolymer; graphene; nanofabrication; nanoribbon; transistor